Segmental Colitis

Abstract
SEGMENTAL colitis, also referred to as "regional colitis" and "right-sided colitis," has been defined as a "chronic, non-specific or cryptogenic inflammatory ulcerative or hyperplastic lesion" involving long, short or multiple segments of the colon.1 This description requires a further clarification of the distinction between segmental colitis and the more common and discrete clinical entities of ulcerative colitis and regional enteritis.The relation between these entities, and the line dividing them, has not always been fully agreed upon and must therefore, for purposes of presentation, be set somewhat arbitrarily. Thus, we have selected as the controlling criterion for the diagnosis of . . .